Alibaba.com offers 672 types of 16mm bolt products. About 7% of these are bolts. A wide variety of types of 16mm bolt options are available to you, such as steel, metal, and stainless steel. You can also choose from door, pipe clamp. As well as from free samples, paid samples. There are 672 types of 16mm bolt suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Japan, which supply 98%, 1%, and 1% of types of 16mm bolt respectively. Types of 16mm bolt products are most popular in Africa, Southeast Asia, and Domestic Market. You can ensure product safety by selecting from certified suppliers, including 440 with Other, 306 with ISO9001, and 42 with ISO/TS16949 certification.